[KPhotoAlbum] Marble map and clustering

[Tobias Leupold]

Hi :-)

> As it turns out this was not a problem of the clustering, but rather a
> display problem (I confused height/width when painting the rectangle). See
> the current master for a corrected render method.

That's way better!

> That said, the grid-like nature of the current clustering algorithm leads to
> some rather non-intuitive clusters in some cases.

Well, at the lastest when they close down my office because somebody coughed
in there, I can check how the Digikam guys implemented it :-P Maybe, we can
improve it a bit.

But after all, it works now and I think it's at leat acceptable.

Cheers, Tobias